'I'lIK l,(>\(i-'rOKI> WATKH HKETLES. 



677 



KKY TO SUBFAMir.IKS OF PAIJNID.-E. 



(/. AlxloiiuMi witli more than five ventral segments; front coxa' with very 

 hirge trochantiu; body subclepressed. 



Subfamily I. Psephenin.e, p. <;TT. 



(Id. Abdomen with only five ventral segments; body convex. 



h. Front eox:e transverse, with distinct trochantin ; body clothed with 

 a dense sill<y pubescence. Subfamily II. I'aunin.k, p. CLS. 



bb. Front coxte rounded without trociiaiitin ; body feebly pubescent. 



Suiirninily III. Elmin.k, p. r,T!). 



Sul.tniiiily I. PSEPHENINAE. 



Ill lliis siiltr.-niiilx- llu' li«';i(l is five, not rdra.-t ilc ; laliniiii In-oad. 

 (•iilircly cdvcriiio Hi,, inaiidiltlrs ; maxillary jtalpi elongate, the last 

 joint wide, halchcl-shaitcd : aiitctiiia' widely sei)afatecl, sei'ratc, 11- 

 joiiilod. loiitivi- than hrad and lliorax; prosternnin cai'inatc, i)i-<)- 

 lonovd hchind into an acute point wliidi lits into a narrow oroove 

 cxtcndinii' the I'ldl Icnutli oT the incsostcrnnni ; al)<h)ni('n of inah; with 

 seven ventral seo-menls. the lirsl and second united, lil'th ])roa(lly 

 eniarginate. sixth deeply i)iloi)ed. visible onl\ around the notch ol 

 llie Hflh; seventh i-ounch'd. entire. Hlliuii' the notch of Hie sixth; 

 female with the segment corresponding to the sixtli in mah' absent. 

 The stil)faniily is represented l)y the single genus 



I. PsEPHENUS llald. 1863. (Gr./'dark or oliscnre.") 



Four species represent the genns in the United States, one of 

 wliich occurs iu Indiana. 



11205 (ot>14). PsEPHEXis I.ECONTEI Lec. Proc. Phil. Acad. N 

 1852, 41. 

 Oval, subdepressed, narrowed in front, obtusely 

 rounded behind, very finely punctate and pubescent. 

 Black or dull brownish-black; head and thorax usually 

 darker, always deep black in the female. Base of 

 thorax twice as wide as apex, bisinuate, distinctly 

 lobed at middle; hind angles acute, sides 

 curved. Length 4.5-6 mm. (Fig. 252.) 



Hudson Lake, Ijaporte County and pool neai' 

 Delong. Fulton County: scarce. August 20. 

 l^robably occurs throughout the lake region of ^''"• 

 llu^ uortheru third of the State. i.eConte says thai 

 insect lives on luishes over the surface of running water 

 found creeping over wet stones in the torrents." 



at. Sci., 



regularly / 



2,-)2. X .5. 



lie pel 

 and is 



feet 



also 



